71538755240 has 32 divisors (see below), whose sum is σ = 161021904480. Its totient is φ = 28604887872.

The previous prime is 71538755213. The next prime is 71538755279. The reversal of 71538755240 is 4255783517.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222062 + ... + 438621.

It is an arithmetic number, because the mean of its divisors is an integer number (5031934515).

Almost surely, 2^71538755240 is an apocalyptic number.

It is an amenable number.

71538755240 is an abundant number, since it is smaller than the sum of its proper divisors (89483149240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71538755240 is a wasteful number, since it uses less digits than its factorization.

71538755240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663401 (or 663397 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 47.

The spelling of 71538755240 in words is "seventy-one billion, five hundred thirty-eight million, seven hundred fifty-five thousand, two hundred forty".